Dual fuels heating elements for heated towel rails are one of the best bathroom accessories around. They’re designed to allow the rail to heat towels using the domestic hot water system in the winter, but using the mains electric supply in the summer. With a traditional central heating towel rail you get warm towels in the winter, but when the heating is turned off, no more hot towels. An electric towel warmer works all year round, but is more expensive to run through the winter than a central heating model. The dual fuel element creates the best of both worlds.